Tom's StudioFrome, United KingdomBrand · Paper goodsRefillable Ink Cartridges (pack of 5): - Deep Black$3.50 – $8Stocked at 2Slackline PressBranford, CTRetailer · Stationery shop$8SunSnow: Paper & GoodsSt. Louis, MORetailer · Stationery shop$3.50